Product #3173 | SKU ADI642 | RME
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8 channel AES to MADI format converter for win/mac (24bit/196kHz)


The ADI-642 is an eight-channel format converter from MADI to AES and vice versa. MADI handles sixty-four channels of 24-bit audio at sampling frequencies up to 48kHz, thirty-two channels up to 96kHz and sixteen channels at 192kHz. All channels are transferred across a single cable, using either a coaxial (BNC) or optical network cable. The AES/EBU channels are provided via 4 XLR inputs and outputs, respectively.

Amongst other applications, the unit can serve as an AES/EBU front-end for RME's Hammerfall DSP MADI PCI card. An easy-to-use 72 x 74 routing matrix can assign any individual input channel to every single output channel, allowing for the free configuration of all sixty-four MADI channels and the eight AES channels.

When the single-space rack-mount unit is serving as a format converter, cable lengths of more than 100 meters can be achieved. The ADI-642 accepts both fifty-six and sixty-four channel standards as well as 96k frame at its input and can be set to generate both these formats at its output. This way the ADI-642 can serve as an interface between otherwise incompatible MADI devices.


  • direct support for MADI Double and Quad Wire
  • Automatic Delay Compensation when using more than one unit
  • Analog stereo monitor output, up to 192 kHz
  • Detailed status display for MADI and AES
  • Completely remote controlable via MIDI
  • Transfer of MIDI data via MADI
  • SteadyClock for maximum jitter reduction and clock regeneration


1 x MADI I/O (optical and coaxial)
1 x MIDI I/O
1 x Stereo DA (Phones)
Com-port I/O (RS232)
World clock I/O
RME remote

ADC: Not applicable
DAC: 24-bit
Sample Rates: Internal: 32, 44.1, 48, 88.2, 96, 176.4 and 192kHz
External: Accepts between 28kHz and 204kHz depending on clock source master
Analog Inputs: No
Analog Outputs: 1 x 1/4" stereo monitor output
Digital Input: 4 x XLR AES/EBU (24-bit up to 192kHz)
1 x MADI Optical via FDDI duplex SC connector
Digital Output: 4 x XLR AES/EBU (24-bit up to 192kHz)
1 x MADI Optical via FDDI duplex SC connector
Word Clock: 1 x BNC input
1 x BNC output
Dynamic Range: Monitor: 140dB RMS unweighted, 143dBA
Frequency Response: Monitor: 1Hz to 20.1kHz, -0.1dB @ 44.1kHz
THD + N: Monitor: -85 dB, <0.005%

Dimensions: (WxDxH) 19" x 9 1/2" x 1 3/4"
Weight: 4.4 lbs

Specialties: The routing matrix can assign any of the 36 stereo input pairs to the monitor


Product Manual
Manufacturers website


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  • Product: RME ADI 642
  • Manufacturer: RME
  • Model: ADI642
  • SKU: ADI642
  • RM Product #: 3173
  • Warranty: 2 year manufacturer warranty

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